26 MEMOIRS NATIONAL ACADEMY OF SCIENCES, VOL. XI. 
5 by 10-15 mm_; prickles usually 10-15 mm. apart, 2-3 mm. long, straight or variously curved, 
narrowly triangular, often lenticularly thickened at base, the intervening at first often reddish 
margin nearly straight. Inflorescence paniculate; pedicels variable. Flowers 60-65 mm. 
long; ovary 30 mm. long, a little longer than the perianth, oblong-fusiform; tube openly 
conical, 8 mm. deep; segments 5 by 25 mm., shorter than the ovary; filaments inserted a 
little below the throat, 45-50 mm. long, twice as long as the segments. Capsules broadly ob- 
long, 25 by 45 mm., very shortly stipitate, beaked; seeds 4-6 by 7-8 mm. Freely bulbiferous. 
Caribbees. Antigua, and to be sought on Barbuda. 
Specimens examined: Antieua ( Wullschldgel, 564; Officers of Botame Station, 1903; Archer, 
1908; Jackson, 1908, the type). 
Agave Trankeera n. sp. 
Plates 25 to 28. 
? A. polyacantha HamMeLBERG, Verslag Geschied-, Taal-, Land-, en Volkenkundig Genootsch. Curagao, vol. 2, p. 23, 
1898. 
Acaulescent or in age with a short trunk, not cespitose. Leaves dark green, dull and 
very slightly glaucous when young, lanceolate, gradually acute, concave, sometimes plicate or 
trough-like toward the end, 18-20 by 150 cm. or more, sometimes refracting in age; spine 
blackish brown or grayish, smooth, dull, rather upcurved, conical, with broadly conical slit 
or inrolled basal thickening 4-7 by 10 mm., decurrent and dorsally intruded into the green 
tissue; prickles mostly about 10 mm. apart, scarcely 2 mm. long, usually straight, triangular 
from somewhat lenticular bases, the intervening often reddish margin slightly concave. Inflor- 
escence 6-7 m. high, the upper half rather broadly oblong-paniculate with moderately ascend- 
ing branches; bracts broadly triangular, approximated, mostly appressed; pedicels 10 mm. long. 
Flowers orange, about 60 mm. long; ovary 30 mm. long, about equaling the perianth, oblong; 
tube open, about 8 mm. deep; segments 8 by 25 mm., shorter than the ovary; filaments 
inserted nearly in the throat, 45 mm. long, about one-half longer than the segments. Cap- 
sules broadly oblong, 25 by 40 mm., shortly stipitate and beaked; seeds unknown. Freely 
bulbiferous. 
Leeward Islands. The “pita de Trankeera” of Curacao, where, as is true of the native 
species on Barbados, it is everywhere used in hedgerows. The only species of its group known 
outside the Caribbees. 
Specimens examined: Curagao (Boldingh, 7, Ald, b, k, 1909, the type; Ecker, 1909, 1910). 
BonatrE (Boldingh, 7457, 1910). Arusa (Boldingh, 1, 2, 1910). 
The specimens from Bonaire and Aruba have the spine-base usually 15-20 mm. long and 
their marginal prickles are smaller. They may prove distinct from the Curagao plant, if not 
from one another, when better known. ; 
Agave Dussiana n. sp. 
Plates 28 and 29. 
A. americana GRISEBACH, FI. British West Indian Islands, p. 582, 1864; Geogr. Verbr. Pfl. Westindiens, p. 49, 1865.— 
Duss, Ann. Inst. Colon., Marseille, vol. 3, p. 557, 1897.—Ursan, Symbol. Antillanae, vol. 4, p. 152, 1903.—All as 
to Guadeloupe and perhaps the immediately adjacent islands. 
A. antillarum BauLET, Guadeloupe, vol. 1, p. 458, 1890.—Maz&, Contr. Fl. Guadeloupe, p. 110, 1892. 
Aspect of A. Karatto. Leaves at first grayish green then somewhat glossy, lanceolate, 
gradually acute, concave, 20-40 by 100-160 cm.; spine blackish, smooth, rather glossy, recurved, 
conical, with broadly conical inrolled base 4 by 5-7 mm., decurrent and dorsally intruded into 
the green tissue; prickles 5-10 mm. apart, 2 mm. long, recurved, narrowly triangular from some- 
what lenticular bases, the intervening sometimes red or papery margin straight. Inflorescence 
5-9 m. high, the upper third pyramidally paniculate, with subhorizontal branches; bracts deltoid, 
rather distant, at length reflexed; pedicels about 15mm.long. Flowers about 65mm. long; ovary 
30-35 mm. long, little longer than the perianth, oblong-fusiform; tube conical,. about 10 mm. 
C 
